EVGA 512-P3-N890-AR GeForce 9800 GTX+ SSC Edition 512MB DDR3 PCI-Express 2.0 Graphics Card PCI Express 2.0 9800 GTX+ with 778MHz clock 512MB of 256-bit 0.8ns DDR3 memory 1123MHz clock with 2246MHz effective memory rate and 1836MHz shader clock Full DirectX 10 and Open GL 2.1 Support